Design of an FPGA-based Real-Time Simulator for electrical system

This paper deals with a real-time simulation (RTS) able to accurately reproduce an electrical system in real-time. The RTS proposed architecture is written in VHDL and implemented in a field programmable gate array (FPGA) device. Multi-sampling approach is adopted allowing a real-time functioning with different time-steps and different operating conditions with minimized lost of accuracy. The proposed concept is illustrated by the RTS of each of a three-phase RLE load performed with a very short time step of 2.5 mus, an inverter, the measurement system and the hysteresis current controllers. Comparison with experimental results shows the high performances of this RTS.